Abstract:
The present invention relates to Stilbene derivatives of the general formula I or a pharmaceutically acceptable salt thereof have properties such as high water solubility, bioavailability and effective as carcinostatics.
Abstract:
The invention relates to a method for producing carotenoids. Said method is characterised in that a dialkoxy dialdehyde of general formula I, where R = C1-C6 alkyl, is reacted with a phosphonium salt of formula II in a double Wittig condensation, or with a phosphonate of formula III in a double Wittig-Horner condensation, whereby the substituents in formulas II and III independently of one another are defined as follows: R = IV; R represents aryl; R to R represent C1-C6 alkyl and X represents an anion equivalent of an inorganic or organic acid.
Abstract translation:本发明涉及一种用于生产类胡萝卜素的方法,其特征在于通式I,其中R的二烷氧基 - 二醛<1> = C1-C6烷基,在双维悌希缩合下式的鏻盐II或 双维悌希-Horner缩合与式III的膦酸酯,其中取代基具有以下含义彼此独立地:R t <3>为芳基; R <4>至R <6> C1-C6烷基,X-是阴离子等价物的无机的 或有机Säureumsetzt。
Abstract:
The present invention relates to an improved process for the preparation of β-carotene having pharmaceutically acceptable level of residual solvent content.
Abstract:
The present invention relates to an improved process for the preparation of β-carotene having pharmaceutically acceptable level of residual solvent content.
Abstract:
A liquid-crystalline styryl derivative characterized by being represented by the following general formula (1). (1) In the formula (1), R 1 and R 2 are the same or different and each represents linear or branched alkyl, alkoxy, cyano, nitro, fluorine, -C(O)O(CH 2 ) m -CH 3 , -C(O)-(CH 2 ) m -CH 3 , or a group represented by the following general formula (2). (2) In the formula (2), R 3 represents hydrogen or methyl; B represents -(CH 2 ) m -, -(CH 2 ) m -O-, -CO-O-(CH 2 ) m -, -CO-O-(CH 2 ) m -O-, -C 6 H 4 -CH 2 -O-, or -CO-; and m is an integer of 1-18. Preferably, R 1 and R 2 in the general formula (1) are the same or different and each is branched alkyl or alkoxy represented by CH 3 -(CH 2 ) x -CH(CH 3 )-(CH 2 ) y -CH 2 - or CH 3 -(CH 2 ) x -CH(CH 3 )-(CH 2 ) y -CH 2 -O- (wherein x is an integer of 0-7 and y is an integer of 0-7). This styryl derivative is suitable for use as an organic semiconductor material.
Abstract:
Grapefruit extract and nootkatone (or its analogs) and nootkatone (or its analog) derivatives are usable in volume-reduction, dissolution and reuse of styrene foams (hydrocarbon polymer plastics such as polystyrene and polypropylene), eliminating oily stains, dissolution of cholesterol, etc. Compared with D-limonene, these substances can reduce the volume of a large amount of plastics (styrene foam, etc.) even in a small amount. Moreover, the resultant solutions containing plastics (styrene foam, etc.) dissolved therein can be easily post-treated at low temperatures. In addition, nootkatone (or its analogs) contained in grapefruit extract can be converted into nootkatone (or its analog) derivatives by chemical treatments and these derivatives show similar effects.
Abstract:
The present disclosure relates to oxylipins, processes for making the same, and methods of using. The process may form deuterated oxylipins that can be used as mass standards for mass spectroscopy.
Abstract:
The present invention relates to a new process for the production of specific intermediates, which are preferably used in the production of vitamin A and/or vitamin A acetate.